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VID 16102
Severity 20
Port 21
Protocol TCP
Class FTP
Detailed Description The WU-FTPD, according to its banner, has a denial of service vulnerability via a glob pattern with multiple '*' characters. WU-FTPD is an ftp daemon for Linux platforms developed at Washington University. WU-FTPD versions 2.6.1 and 2.6.2 are vulnerable to a denial of service attack. The vulnerability exists in the wu_fnmatch() function in wu_fnmatch.c file. By sending an FTP DIR command containing a large number of '*' characters as a parameter, a remote attacker could cause an affected server to exhaust all available resources on the server.

* Note: This check solely relied on the banner of the remote FTP server to assess this vulnerability, so this might be a false positive.

* References:
http://www.idefense.com/application/poi/display?id=207&type=vulnerabilities&flashstatus=true

* Platforms Affected:
Washington University, wu-ftpd 2.6.1 and 2.6.2
Linux Any version
Unix Any version
Recommendation No upgrade or patch available as of March 2005.

Upgrade to the new version of WU-FTPD (2.6.2 later), when new version fixed this problem becomes available from the WU-FTPD Web site at http://www.wu-ftpd.org
Related URL CVE-2005-0256 (CVE)
Related URL (SecurityFocus)
Related URL 19495 (ISS)